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Finding the Fourth Proportional to 117,729.60, 176,594.40 and 71,073.60

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Solution

The fourth proportional to 117,729.60, 176,594.40 and 71,073.60 is: 106,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,729.60 : 176,594.40 = 71,073.60 : x
  2. Step 2: Convert to fraction form
    117,729.60/176,594.40 = 71,073.60/x
  3. Step 3: Cross multiply
    117,729.60x = 176,594.40 × 71,073.60
  4. Step 4: Simplify right side
    117,729.60x = 12,551,199,747.84
  5. Step 5: Solve for x
    x = 12,551,199,747.84/117,729.60
  6. Step 6: Final answer
    x = 106,610.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.